Control Arms?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1980GMC · 03-21-2008, 06:21 AM

I've got a 5"/5" drop set up for my truck and read somewhere that with 3" spindles and 2" springs there might be rubbing between the wheel and the LCA.
I think it also mentioned that it only rubbed with 15" wheels, but cant remember.

Will there be rubbing if I run my 15" wheels? What size of wheel will not rub?

Also, the little crossmember right in front of the very rear X-member, and just behind the rear axle; can I cut that off without losing frame rigidity?

Thanks

cochino12 · 03-21-2008, 07:02 AM

Quote:

Originally Posted by 1980GMC

I've got a 5"/5" drop set up for my truck and read somewhere that with 3" spindles and 2" springs there might be rubbing between the wheel and the LCA.
I think it also mentioned that it only rubbed with 15" wheels, but cant remember.

Will there be rubbing if I run my 15" wheels? What size of wheel will not rub?

Also, the little crossmember right in front of the very rear X-member, and just behind the rear axle; can I cut that off without losing frame rigidity?

Thanks

I was under the impression you shouldnt use lca's and spindles? I've got lca's and coils because I was trying to save up some money for spindles without having to change my 15" ralley's.

killthewabbit · 03-21-2008, 07:05 AM

I think he meant rubbing on the stock LCAs with the 3" spindle. I've heard a lot of people say that you need to do some trimming if planning to run 3" drop spindles with 15" wheels.

I've never tried it myself, but I read a lot. Hee hee. Rc415 and I believe bigblock73 both had problems with rubbing 15s and 3" drop spindles.

cochino12 · 03-21-2008, 07:12 AM

Quote:

Originally Posted by killthewabbit

I think he meant rubbing on the stock LCAs with the 3" spindle. I've heard a lot of people say that you need to do some trimming if planning to run 3" drop spindles with 15" wheels.

I've never tried it myself, but I read a lot. Hee hee. Rc415 and I believe bigblock73 both had problems with rubbing 15s and 3" drop spindles.

Your right, I cant read ha ha.

flamingbig10 · 03-21-2008, 10:29 AM

yep on 3 inch spindles the caliper ears need to be grinded to clear 15 inch wheels

EN*PN78 · 03-21-2008, 11:23 AM

Yes sir, I got 2.5 spindles and 2 drop springs with a coil cut out just to be crazy. I pushing as low as possible. Talk about rubbin and cut up inner fenders.
The lower control arms must be grinded down. Mine where a huge problem on the bottom side toward the back or cab. Only on big sharp turns. Easy fix though.

Hazieview · 03-21-2008, 11:43 AM

I have drop spindles and I noticed that my wheel wieghts keep grinding off. This is the reason I thought about getting bigger wheels. I wonder if I would have problems with 20s...?

1980GMC · 03-22-2008, 11:38 PM

Maybe a 18" wheel set up wont rub?

Thanks for all the replies so far.

03-21-2008, 06:21 AM	#1
1980GMC Registered User Join Date: Oct 2007 Location: Alberta Posts: 117	Control Arms?? I've got a 5"/5" drop set up for my truck and read somewhere that with 3" spindles and 2" springs there might be rubbing between the wheel and the LCA. I think it also mentioned that it only rubbed with 15" wheels, but cant remember. Will there be rubbing if I run my 15" wheels? What size of wheel will not rub? Also, the little crossmember right in front of the very rear X-member, and just behind the rear axle; can I cut that off without losing frame rigidity? Thanks __________________ Wes 1980 GMC Sierra SCSB-2WD 1986 Chevrolet C10 SCSB-2WD Last edited by 1980GMC; 03-21-2008 at 06:26 AM.

03-21-2008, 07:05 AM	#3
killthewabbit Spear and magic helmet! Join Date: Oct 2006 Location: Nashville, TN Posts: 1,226	Re: Control Arms?? I think he meant rubbing on the stock LCAs with the 3" spindle. I've heard a lot of people say that you need to do some trimming if planning to run 3" drop spindles with 15" wheels. I've never tried it myself, but I read a lot. Hee hee. Rc415 and I believe bigblock73 both had problems with rubbing 15s and 3" drop spindles.

03-21-2008, 10:29 AM	#5
flamingbig10 6.0 powered square Join Date: Feb 2008 Location: Mesquite texas Posts: 3,459	Re: Control Arms?? yep on 3 inch spindles the caliper ears need to be grinded to clear 15 inch wheels __________________ Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326

03-21-2008, 11:23 AM	#6
EN*PN78 Registered User Join Date: Mar 2008 Location: SE PDX,OR Posts: 25	Re: Control Arms?? Yes sir, I got 2.5 spindles and 2 drop springs with a coil cut out just to be crazy. I pushing as low as possible. Talk about rubbin and cut up inner fenders. The lower control arms must be grinded down. Mine where a huge problem on the bottom side toward the back or cab. Only on big sharp turns. Easy fix though.

03-21-2008, 11:43 AM	#7
Hazieview Building Dreams out of Dimes! Join Date: May 2005 Location: Bonham, Tx Posts: 892	Re: Control Arms?? I have drop spindles and I noticed that my wheel wieghts keep grinding off. This is the reason I thought about getting bigger wheels. I wonder if I would have problems with 20s...?

03-22-2008, 11:38 PM	#8
1980GMC Registered User Join Date: Oct 2007 Location: Alberta Posts: 117	Re: Control Arms?? Maybe a 18" wheel set up wont rub? Thanks for all the replies so far. __________________ Wes 1980 GMC Sierra SCSB-2WD 1986 Chevrolet C10 SCSB-2WD

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